# ABG Expert vs NK Dimensions AR

The clearest difference is update cadence: NK Dimensions AR at weekly against ABG Expert's every 5 months. NK Dimensions AR also leads on rating (5.0 vs 4.8) and iOS requirement (9.0 vs 13.0). ABG Expert's advantage is ratings volume (9 vs 3). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

NK Dimensions AR holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 9 and 3 respectively.

ABG Expert ships an update every 5 months, NK Dimensions AR weekly. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | ABG Expert | NK Dimensions AR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (9 ratings)](https://appshunter.io/ios/app/abg-expert/id885575488/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/nk-dimensions-ar/id1463051986/reviews)** |
| Number of ratings | **9** | 3 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Weekly** |
| Monetization | Free | Free |
| Size | 2 MB | 212 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Brian Dale Vander Werf MD Inc](https://appshunter.io/developer/1521935908) | [Nihon Kohden America, Inc.](https://appshunter.io/developer/1146663859) |

## What reviewers say

### ABG Expert

[App page](https://appshunter.io/ios/app/abg-expert/id885575488)

This medical tool provides accurate and flexible acid-base analysis for healthcare professionals. It offers detailed explanations, customizable ranges, and advanced features like anion gap correction and A-a gradient adjustments for various patient conditions and locations.

**Highlights:** Validated accuracy with real-world testing, Plausibility checks for physiologically impossible data, Automatic anion gap correction with albumin, Detailed explanations with equations, Separate or combined analysis of ABG, anion gap, A-a gradient, Customizable normal ranges for anion gap and delta gap, Age and barometric pressure adjustments for A-a gradient, Support for SI and non-SI units, Color-coded results and differential diagnoses, Adjustments for chronic respiratory conditions

**Features:** macOS Compatibility

**In-app purchases:** none


### NK Dimensions AR

[App page](https://appshunter.io/ios/app/nk-dimensions-ar/id1463051986)

Learn proper electrode placement for 3 and 6 lead sets. This app also educates clinicians on identifying and understanding common cardiac arrhythmias. Requires physical posters to use.

**Highlights:** Electrode placement learning, 3 and 6 lead set guidance, Cardiac arrhythmia identification, Clinical education tool, Augmented reality visualization

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ABG Expert free?

ABG Expert is free to download, with no in-app purchases.

### Is NK Dimensions AR free?

NK Dimensions AR is free to download, with no in-app purchases.

### Which has better reviews, ABG Expert or NK Dimensions AR?

NK Dimensions AR is rated higher. ABG Expert averages 4.8 out of 5 from 9 ratings, while NK Dimensions AR averages 5.0 from 3 ratings.

### Do ABG Expert or NK Dimensions AR have ads?

Neither ABG Expert nor NK Dimensions AR shows ads.

### Which is updated more often, ABG Expert or NK Dimensions AR?

ABG Expert ships an update every 5 months, and NK Dimensions AR weekly. Most recently, ABG Expert was updated on November 1, 2026 and NK Dimensions AR on November 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*